Welcome to the forum. For the numerals, you would have to adapt something like this for greek . For the appendix word in ukrainian, just load babel accordingly. \documentclass{report} \usepackage[ukrainian]{babel} \makeatletter \newcommand{\cyralpha}[1]{\c@cyralpha{#1}} \newcommand{\c@cyralpha}[1]{%...

Welcome to the forum. Unfortunately, what you have given us tells us nothing about what could go on. There might be a simple error in one of your chapters, or maybe something is hidden in an auxiliary file (delete them). A minimal working example would be needed. What I can say though, which is off-...